VatMainderWhen is the VAT return due in Finland? Due dates and filing periods
Monthly, quarterly or yearly: when Finnish VAT returns are due, how Vero moves a deadline off a weekend, and what filing late costs.
In Finland, VAT is a self-assessed tax. Vero doesn’t send you a bill: you work out the VAT for each period, file the return in MyTax (OmaVero) and pay it by the due date yourself. You file a return for every period while you’re in the VAT register, even when you sold nothing.
The due date: the 12th of the second month
For a monthly or quarterly period, the return and the payment are due on the 12th of the second month after the period ends.
| Period | Due |
|---|---|
| August 2026 (monthly) | 12 October 2026 |
| September 2026 (monthly) | 12 November 2026 |
| July to September 2026 (quarterly) | 12 November 2026 |
| October to December 2026 (quarterly) | 12 February 2027 |
| Calendar year 2026 (yearly) | 1 March 2027 (the end of February, moved off a Sunday) |
A yearly return is due at the end of February after the year. When a due date falls on a weekend or a public holiday, it moves to the next business day: Vero’s 12th becomes the 13th or 14th a few times a year.
Monthly, quarterly or yearly?
A new business files monthly unless it asks for a longer period. You can switch to a longer one when your turnover is low enough:
- Quarterly: turnover up to €100,000 a year.
- Yearly: turnover up to €30,000 a year.
A longer period means fewer returns, but bigger payments. Monthly returns keep each payment small, and the figures are fresh when you file them.
Do you need to register at all?
You must register for VAT once your turnover passes €20,000 in a calendar year, from the day it passes. Below that you can register voluntarily. Many couriers and taxi drivers start out under the threshold and cross it partway through a year, so it’s worth keeping an eye on the total.
What filing late costs
- Late-filing penalty: €3 for each day, up to €135. After 45 days, 2% of the tax filed late is added on top, up to €15,000.
- Late-payment interest: 9.5% a year in 2026, from the day after the due date.
The penalty applies even when the return shows no tax to pay, so a forgotten “nothing happened” return still costs money.
How VatMainder keeps track
VatMainder knows these rules. Pick Finland and your filing period, and it works out each due date, including the weekend and holiday moves. It reminds you 14, 7 and 2 days before each return and on the day itself, and the filing guide then shows the figures to type into MyTax, one field at a time. If you aren’t registered yet, the app warns you when your turnover nears €20,000, and again when it’s time to register.
Vero’s instructions for filing VAT returns and registering for VAT have the details.
VatMainder isn’t an official tax authority app, and this isn’t tax advice. Rules change: check the details for your own situation with your tax authority or an accountant.
